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Additive for regenerating electrolytic copper by using etching waste liquid, preparation method of additive and electrolyte

A technology for etching waste liquid and electrolytic copper, which is applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problems of long electrolysis operation time, large electrolysis power consumption, and low hardness of copper plates, so as to save electrolysis time and improve Adsorption speed, effect of increasing current density

Pending Publication Date: 2021-08-10
东普瑞环保科技(珠海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the electrolytic copper process, the current density is often low, resulting in low hardness of the obtained copper plate, and the electrolytic operation time is long, and the electrolytic power consumption is relatively large.

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0035] In an optional embodiment, the leveling agent is prepared by the following steps:

[0036] Add 0.5g-1g wine red dye to 500mL polyethylene glycol with a molecular weight of 200, stir and mix.

[0037] Here the wine red dye can adjust the color of the liquid to be consistent and even, so as to obtain a metal copper coating with better surface uniformity.

[0038] The present invention also proposes a preparation method of an additive for regenerating electrolytic copper from etching waste liquid, comprising the following steps:

[0039] Add an acid reagent to 15kg of water to adjust the pH range to 2-3;

[0040] Add 500-1000 parts of copper brightener, 300-500 parts of conductive agent, 1000-1500 parts of stabilizer and 2000-2500 parts of wetting agent in sequence, stir to dissolve;

[0041] Add an acidic reagent, slowly add 20-100 parts of complexing agent while stirring, adjust the pH value to 1, continue stirring and mixing to obtain an additive for regenerating elec...

Embodiment 1

[0052] The additive of this embodiment can be prepared by the following steps:

[0053] (1) adding 100g mass concentration to 15kg water is 49% analytically pure sulfuric acid, and adjusting the pH value range is 2-3;

[0054] (2) Add 1000g copper brightener, 500g conductive agent, 1000g stabilizer and 2500 parts of wetting agent successively, stir to make it dissolve;

[0055] (3) adding 100g mass concentration is 49% analytically pure sulfuric acid, slowly adding the complexing agent of 100g while stirring, and adjusting the pH value to 1;

[0056] (4) Add 500g of leveling agent prepared in advance, stir and mix to obtain an additive for regenerating electrolytic copper from etching waste liquid. Wherein, the leveling agent is prepared by the following steps: adding 0.5 g of wine red dye to 500 mL of polyethylene glycol with a molecular weight of 200, stirring and mixing.

Embodiment 2

[0058] The additive of this embodiment can be prepared by the following steps:

[0059] (1) adding 100g mass concentration to 15kg water is 49% analytically pure sulfuric acid, and adjusting the pH value range is 2-3;

[0060] (2) Add 800g copper brightener, 450g conductive agent, 1200g stabilizer and 2400 parts of wetting agent successively, stir to make it dissolve;

[0061] (3) adding 100g mass concentration is 49% analytically pure sulfuric acid, slowly adding the complexing agent of 80g while stirring, adjusting the pH value to 1;

[0062] (4) Add 400g of leveling agent prepared in advance, stir and mix to obtain an additive for regenerating electrolytic copper from etching waste liquid. Wherein, the leveling agent is prepared by the following steps: adding 0.8 g of wine red dye to 500 mL of polyethylene glycol with a molecular weight of 200, stirring and mixing.

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Abstract

The invention discloses an additive for regenerating electrolytic copper by using an etching waste liquid, a preparation method of the additive and an electrolyte. The additive for regenerating electrolytic copper by using the etching waste liquid comprises the following components in parts by mass: 500-1000 parts of a copper brightening agent, 300-500 parts of a conductive agent, 1000-1500 parts of a stabilizer, 2000-2500 parts of a wetting agent and 20-100 parts of a complexing agent. According to the technical scheme, the electrolytic density in the electrolytic process can be improved, so that the hardness of an obtained copper plate is enhanced, meanwhile, the electrolytic time is saved, and the electrolytic power consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of regeneration of etching waste liquid, in particular to an additive for regeneration of electrolytic copper from etching waste liquid, a preparation method thereof, and an electrolyte. Background technique [0002] Etching treatment is a very important step in the process of PCB board preparation. Whether it is acidic etching or alkaline etching, a large amount of etching waste liquid will be produced. The etching waste liquid contains a large amount of copper ions. Usually, electrolytic operation is used to treat the etching waste liquid. Electrolysis operates to recover the metals contained therein. At present, in the electrolytic copper process, the current density is often low, resulting in low hardness of the obtained copper plate, and the electrolytic operation time is long, and the electrolytic power consumption is relatively large. Contents of the invention [0003] The main purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/12C23F1/46
CPCC23F1/46C25C1/12Y02P10/20
Inventor 刘革强
Owner 东普瑞环保科技(珠海)有限公司
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